acos x
acos I
i1 : acos 0.5 o1 = 1.047197551196598 o1 : RR (of precision 53)
See Trigonometric function.
The object acos is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Macaulay2Doc/ov_analytic_functions.m2:249:0.